SELECT 
  company_descriptions.*, 
  companies.*, 
  vendor_plan_descriptions.plan, 
  seo_names.name as seo_name, 
  seo_names.path as seo_path, 
  vendor_ga_tracking_code, 
  vendor_fb_tracking_code, 
  AVG(discussion_rating.rating_value) AS average_rating, 
  CONCAT(
    companies.company_id, 
    '_', 
    IF (
      discussion_rating.thread_id, discussion_rating.thread_id, 
      '0'
    )
  ) AS company_thread_ids 
FROM 
  companies AS companies 
  LEFT JOIN company_descriptions AS company_descriptions ON company_descriptions.company_id = companies.company_id 
  AND company_descriptions.lang_code = 'en' 
  LEFT JOIN vendor_plan_descriptions ON companies.plan_id = vendor_plan_descriptions.plan_id 
  AND vendor_plan_descriptions.lang_code = 'en' 
  LEFT JOIN seo_names ON seo_names.object_id = 456 
  AND seo_names.type = 'm' 
  AND seo_names.dispatch = '' 
  AND seo_names.lang_code = 'en' 
  LEFT JOIN discussion as discussionA ON discussionA.object_id = companies.company_id 
  AND discussionA.object_type = 'M' 
  LEFT JOIN discussion_posts ON discussion_posts.thread_id = discussionA.thread_id 
  AND discussion_posts.status = 'A' 
  LEFT JOIN discussion_rating ON discussionA.thread_id = discussion_rating.thread_id 
  AND discussion_rating.post_id = discussion_posts.post_id 
WHERE 
  companies.company_id = 456

Query time 0.00134

JSON explain

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    "nested_loop": [
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          "used_columns": [
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            "status",
            "company",
            "lang_code",
            "address",
            "city",
            "state",
            "country",
            "zipcode",
            "email",
            "phone",
            "url",
            "storefront",
            "secure_storefront",
            "entry_page",
            "redirect_customer",
            "countries_list",
            "timestamp",
            "shippings",
            "logos",
            "request_user_id",
            "request_account_name",
            "request_account_data",
            "plan_id",
            "stripe_connect_account_id",
            "identifier_facebook_pixel",
            "featured_products",
            "sd_ga_tracking_code",
            "paypal_commerce_platform_account_id",
            "tagline",
            "url_facebook",
            "url_instagram",
            "url_twitter",
            "url_pinterest",
            "announcement",
            "shippo_api_token",
            "shippo_carrier",
            "shippo_service_type",
            "vendor_ga_tracking_code",
            "vendor_fb_tracking_code",
            "custom_domain",
            "custom_domain_status",
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            "taxjar_export_statuses",
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            "ag_hide_city",
            "updated_timestamp",
            "suspend_date",
            "grace_period_start",
            "last_time_suspended",
            "last_debt_notification_time",
            "tax_number",
            "stripe_connect_account_type",
            "registered_from_storefront_id"
          ]
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      {
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          },
          "used_columns": [
            "company_id",
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            "company_description",
            "terms",
            "subdomain_colors",
            "i18n_company",
            "i18n_address",
            "i18n_city"
          ]
        }
      },
      {
        "table": {
          "table_name": "vendor_plan_descriptions",
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          },
          "used_columns": [
            "plan_id",
            "lang_code",
            "plan"
          ]
        }
      },
      {
        "table": {
          "table_name": "seo_names",
          "access_type": "ref",
          "possible_keys": [
            "PRIMARY",
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          ],
          "key": "PRIMARY",
          "used_key_parts": [
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            "lang_code"
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          ],
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          "cost_info": {
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          },
          "used_columns": [
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            "type",
            "dispatch",
            "path",
            "lang_code"
          ]
        }
      },
      {
        "table": {
          "table_name": "discussionA",
          "access_type": "const",
          "possible_keys": [
            "object_id"
          ],
          "key": "object_id",
          "used_key_parts": [
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            "data_read_per_join": "24"
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          "used_columns": [
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            "object_id",
            "object_type"
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      {
        "table": {
          "table_name": "discussion_posts",
          "access_type": "ref",
          "possible_keys": [
            "thread_id",
            "thread_id_2"
          ],
          "key": "thread_id_2",
          "used_key_parts": [
            "thread_id",
            "status"
          ],
          "key_length": "6",
          "ref": [
            "goimagine.discussionA.thread_id",
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          ],
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            "prefix_cost": "2.02",
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          },
          "used_columns": [
            "post_id",
            "thread_id",
            "status"
          ]
        }
      },
      {
        "table": {
          "table_name": "discussion_rating",
          "access_type": "eq_ref",
          "possible_keys": [
            "PRIMARY",
            "thread_id"
          ],
          "key": "PRIMARY",
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          "key_length": "3",
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            "goimagine.discussion_posts.post_id"
          ],
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          },
          "used_columns": [
            "rating_value",
            "post_id",
            "thread_id"
          ],
          "attached_condition": "<if>(is_not_null_compl(discussion_rating), (`goimagine`.`discussion_rating`.`thread_id` = `goimagine`.`discussionA`.`thread_id`), true)"
        }
      }
    ]
  }
}

Result

company_id lang_code company_description terms subdomain_colors i18n_company i18n_address i18n_city status company address city state country zipcode email phone url storefront secure_storefront entry_page redirect_customer countries_list timestamp shippings logos request_user_id request_account_name request_account_data plan_id stripe_connect_account_id identifier_facebook_pixel featured_products sd_ga_tracking_code paypal_commerce_platform_account_id tagline url_facebook url_instagram url_twitter url_pinterest announcement shippo_api_token shippo_carrier shippo_service_type vendor_ga_tracking_code vendor_fb_tracking_code custom_domain custom_domain_status taxjar_key taxjar_export_statuses taxjar_export_csv_data ag_hide_city updated_timestamp suspend_date grace_period_start last_time_suspended last_debt_notification_time tax_number stripe_connect_account_type registered_from_storefront_id plan seo_name seo_path average_rating company_thread_ids
456 en <p><strong></strong><strong>Thank you for stopping by!&nbsp; My name is Terri.&nbsp; I love to make jewelry, and I will make jewelry out of most anything! &nbsp; I have been crocheting since I was six and love combining yarns for a unique texture and look.&nbsp; If you have been to my shop before, be sure to sort by newly listed so you can see my new additions.&nbsp; Let me know if you have any questions on my items.&nbsp;</strong><br></p> <p><strong>And...yes, in the pic my readers do have the sticker showing the strength.&nbsp; I have them in different strengths throughout the house.&nbsp; I leave them on the readers so that if I pic up an older pair with a lower strength, I can look at the sticker and not think I am going blind!</strong></p> <p><strong>In this picture I am making dainty little necklaces and hair bows for my granddaughter.&nbsp; I make my jewelry in the formal dining room.&nbsp; My husband said we should not have bought a house with a formal living and dining room, because we do not use them.&nbsp; Well, I am using them now!!!&nbsp; I have foil down on my table to protect it...and it forms to the table so it worked well, and rubber gloves on so I do not burn my fingers while making the bows!&nbsp; Just in case you were wondering...and, my mouth is open cuz I am talking.</strong></p><p><strong>And...When I mention in my listings that colors can vary by monitors...I spelled it very!&nbsp; Too many to change!&nbsp;&nbsp;</strong></p> <h6>I gladly accept returns and exchanges </h6> <p> Contact me within: <span class="text-gray-darker">14 days of delivery</span> Ship items back within: <span class="text-gray-darker">30 days of delivery</span> <br></p> <h6> I don't accept cancellations </h6> <p> But please contact me if you have any problems with your order. <br></p> <h6>The following items can't be returned or exchanged Because of the nature of these items, unless they arrive damaged or defective, I can't accept returns for: </h6> <ul><li>Custom or personalized orders</li><li>Perishable products (like food or flowers)</li><li>Digital downloads</li><li>Intimate items (for health/hygiene reasons)</li></ul> <p> <strong>Conditions of return Buyers are responsible for return shipping costs. If the item is not returned in its original condition, the buyer is responsible for any loss in value.&nbsp; I would suggest using the original packaging to mail it back.<br></strong></p> <p><strong><br></strong>If you are not happy, I am not happy!&nbsp; Please contact me if you have an issue.<strong></strong></p> <p><strong></strong></p> {"tmenu_style":"H","default_colors":"N","link_color":"#007d89","label_color":"#00a0af","icon_color":"#00a0af","main_btn_color":"#6dd1d6","branded_text_color":"#00a0af","vbp_1_url":"","vbp_2_url":"","vbp_3_url":"","vba_1_url":"","vba_2_url":"","vba_3_url":""} Jewels2at 2401 Boardwalk Dr Mesquite A Jewels2at 2401 Boardwalk Dr Mesquite TX US 75181 Jewels2at@ymail.com none Y 1587602598 283 a:4:{s:14:"company_fields";a:2:{i:37;s:5:"Terri";i:38;s:7:"Tarlton";}s:15:"admin_firstname";s:5:"Terri";s:14:"admin_lastname";s:7:"Tarlton";s:6:"fields";a:0:{}} 4 acct_1EKSEEEJr57f8d5X 17213,17375,17508,18864,17429,15086 pinterest.com/jewels2at UA-42437559-2 jewels2at.com A N 0 0 0 0 0 S All-Star Plan jewels2at 5.0000 456_2729