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 = 138 
  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 = 138

Query time 0.00099

JSON explain

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    "nested_loop": [
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          "used_columns": [
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            "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",
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            "taxjar_export_statuses",
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            "updated_timestamp",
            "suspend_date",
            "grace_period_start",
            "last_time_suspended",
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            "tax_number",
            "stripe_connect_account_type",
            "registered_from_storefront_id"
          ]
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            "i18n_address",
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          ]
        }
      },
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          "used_columns": [
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          ]
        }
      },
      {
        "table": {
          "table_name": "seo_names",
          "access_type": "ref",
          "possible_keys": [
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          ],
          "key": "PRIMARY",
          "used_key_parts": [
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          "key_length": "206",
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          ],
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          "cost_info": {
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          },
          "used_columns": [
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            "path",
            "lang_code"
          ]
        }
      },
      {
        "table": {
          "table_name": "discussionA",
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          "possible_keys": [
            "object_id"
          ],
          "key": "object_id",
          "used_key_parts": [
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            "const"
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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": [
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          ],
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          "using_index": true,
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          },
          "used_columns": [
            "post_id",
            "thread_id",
            "status"
          ]
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      },
      {
        "table": {
          "table_name": "discussion_rating",
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          "possible_keys": [
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            "thread_id"
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          "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
138 en <p>Hey y'all!!! Welcome to Knutty Knitter SC!!</p> <p>My name is Jennifer, I’m originally from Central NY but moved here to Summerville, SC because I absolutely love the lifestyle and the people here! I’m Mama to a GIGANTOR 18yr old son whom I adore & have The Big Guy, who isn’t too bad & feeds my yarn addiction.&nbsp;<br></p> <p>I will knit just about anything you can think of but my favorite items are things like shawls, blankets, baby sweaters&hellip;The idea that something I’ve created can be passed down in a family & treasured does my heart good!</p> <p>I look forward to helping your ideas become a reality!</p> <p>Have a blessed day!</p> <p>Jennifer</p> <p>Knutty Knitter SC</p> <p>Shipping on in stock items will be done within 3 business days of payment</p> <p><br></p> <p>RETURNS</p> <p>I CAN NOT REFUND/ACCEPT RETURNS &nbsp;But I will do what I can to make sure that if you have a valid complaint, it is addressed and fixed as quickly as possible &nbsp;</p> <p>I always do my best to represent my work in my photos and descriptions. often times, it is difficult to capture the true color of the yarn. When able, I provide a stock photo from the manufacturer so I do not accept returns based on color dislike when photos like that have been provided.&nbsp;</p> <p>Please read DESCRIPTIONS CAREFULLY! I always provide measurements, length, width, height...</p> <p>If you are unhappy with an item purchased, please do not hesitate to contact me, I will do everything in my power to fix the situation .</p> <p>I DO NOT KNIT PRODUCTS THAT INVOLVE COPYWRITTEN MATERIAL OR TRADEMARK INFRINGEMENT ie Disney characters, major league sports, etc. But if you see a knit item in a TV show and would like me to replicate it (a hat from Gilmore Girls, a wrap from Highlander etc) that I am able to do to the best of my ability!</p> <p><br></p> <p>CUSTOM ORDERS ARE NON-REFUNDABLE</p> <p>I AM NOT RESPONSIBLE FOR ANY SHIPPING DELAYS. YOU WILL BE PROVIDED A TRACKING NUMBER ONCE I SHIP YOUR PURCHASE BUT I HAVE NO CONTROL OVER HOW USPS HANDLES YOUR ITEM. If there is a problem, please contact me and I am always happy to do everything I possibly can to assist!</p> <p><br></p> {"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":""} Knutty Knitter SC 1001 Bear Island Rd. Unit 1002 Summerville A Knutty Knitter SC 1001 Bear Island Rd. Unit 1002 Summerville SC US 29483-7073 cbsbrighteyes@yahoo.com none Y 1584740588 124 a:4:{s:14:"company_fields";a:2:{i:37;s:8:"Jennifer";i:38;s:8:"O’Neil";}s:15:"admin_firstname";s:8:"Jennifer";s:14:"admin_lastname";s:8:"O’Neil";s:6:"fields";a:0:{}} 3 acct_1FdM1JAp3cZFFmz5 286305,62037,265598,120081,2627 UA-177189133-1 R7XFEPTPGKBZC The Every Day To The Everlasting https://m.facebook.com/knuttyKnitter/?__nodl&_rdr https://instagram.com/knutty_knitter_sc https://mobile.twitter.com/pucklovers4ever https://pin.it/rn4ceQm <p><span style="-webkit-text-size-adjust: 100%;">Thanks so much for stopping in! Why don’t y’all sit on the porch & stay a while!</span></p><p><span style="-webkit-text-size-adjust: 100%;">CUSTOM ORDERS HAPPILY ACCEPTED</span><span style="-webkit-text-size-adjust: 100%;">!</span><br></p> <p>FREE LOCAL PICKUP FOR THE SUMMERVILLE/CHARLESTON AREA</p> <p></p> <p><span style="-webkit-text-size-adjust: 100%;"><br></span></p> <p><br></p> oauth.3e1dwht0jsd9bulhSQFmzzgK_k9c_8Y71jdmtrwe.535AI_R3R9TwjKA_7FWFLLZ5olMVdo9hRVM8q1RKLcA UA-177189133-1 A N 0 0 0 0 0 S Professional Plan knuttyknittersc 5.0000 138_569