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 = 225 
  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 = 225

Query time 0.00182

JSON explain

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      "query_cost": "2.86"
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    "nested_loop": [
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          "table_name": "companies",
          "access_type": "const",
          "possible_keys": [
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          "key": "PRIMARY",
          "used_key_parts": [
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          ],
          "key_length": "4",
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          ],
          "rows_examined_per_scan": 1,
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          "cost_info": {
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            "data_read_per_join": "14K"
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          "used_columns": [
            "company_id",
            "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",
            "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"
          ]
        }
      },
      {
        "table": {
          "table_name": "company_descriptions",
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          "key": "PRIMARY",
          "used_key_parts": [
            "company_id",
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          },
          "used_columns": [
            "company_id",
            "lang_code",
            "company_description",
            "terms",
            "subdomain_colors",
            "i18n_company",
            "i18n_address",
            "i18n_city"
          ]
        }
      },
      {
        "table": {
          "table_name": "vendor_plan_descriptions",
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            "data_read_per_join": "1K"
          },
          "used_columns": [
            "plan_id",
            "lang_code",
            "plan"
          ]
        }
      },
      {
        "table": {
          "table_name": "seo_names",
          "access_type": "ref",
          "possible_keys": [
            "PRIMARY",
            "dispatch"
          ],
          "key": "PRIMARY",
          "used_key_parts": [
            "object_id",
            "type",
            "dispatch",
            "lang_code"
          ],
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          ],
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          "cost_info": {
            "read_cost": "0.87",
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            "prefix_cost": "0.97",
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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": [
            "object_id",
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          ],
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            "const"
          ],
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            "data_read_per_join": "24"
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          "used_columns": [
            "thread_id",
            "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": "2.25",
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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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          "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
225 en <p><span style="color: rgb(31, 73, 125);"><strong><em>Thanks for visiting Stony Mountain Jewelry!&nbsp; Creating distinctive jewelry for you in a mountain top studio.&nbsp; Our work is hand fabricated in sterling silver and high karat gold.&nbsp; Using fine quality gemstones and our own hand cut cabochons, we are pleased to offer you many one-of-a-kind fine art jewelry pieces.</em></strong></span></p> <p>Jewelry is a very personal item.&nbsp;&nbsp; We realize you may not fully comprehend a jewelry item through a series of photographs.&nbsp; We want you to be thrilled with your selection from Stony Mountain Jewelry and to wear it happily for many years.&nbsp; Please shop with confidence; if one of our pieces is not as you perceived; you may return it within 7 days for a full refund. </p> <p>Returned items must be in the original condition and original box for refund. We urge you to insure the package as we are not responsible for loss or damage. Please notify us of your intent to return the item prior to shipping. </p> <p>&nbsp;</p> <p>We accept returns and cancellations</p> <ul><li>Contact me within: 3 days of delivery </li><li>Ship items back within: 7 days of delivery </li><li>Request a cancellation: before item has shipped (Items often ship within an hour of being purchased) </li><li>&nbsp;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.</li></ul> {"tmenu_style":"V","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":""} Stony Mountain Jewelry PO Box 3 A Stony Mountain Jewelry PO Box 3 TN US 37688 StonyMountainJewelry@gmail.com none Y 1585683016 0 a:4:{s:14:"company_fields";a:2:{i:37;s:13:"Ran & Allison";i:38;s:9:"Armstrong";}s:15:"admin_firstname";s:13:"Ran & Allison";s:14:"admin_lastname";s:9:"Armstrong";s:6:"fields";a:0:{}} 3 acct_1GVMimLHIFWkolAN 14881,10866,14882,10973,14871,6497 A {"items_per_file":"2500","time_from":"","time_to":""} N 0 0 0 0 0 S Professional Plan stony-mountain-jewelry 225_0