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SELECT 
  cscart_companies.company_id, 
  cscart_companies.lang_code, 
  cscart_companies.email, 
  cscart_companies.company, 
  cscart_companies.timestamp, 
  cscart_companies.status, 
  cscart_companies.tax_number, 
  cscart_company_descriptions.company_description, 
  absolute_rating.rating AS absolute_vendor_rating, 
  cscart_vendor_plan_descriptions.plan, 
  cscart_seo_names.name as seo_name, 
  cscart_seo_names.path as seo_path, 
  AVG(
    cscart_discussion_rating.rating_value
  ) AS average_rating, 
  CONCAT(
    cscart_companies.company_id, 
    '_', 
    IF (
      cscart_discussion_rating.thread_id, 
      cscart_discussion_rating.thread_id, 
      '0'
    )
  ) AS company_thread_ids, 
  cscart_companies.suspend_date, 
  cscart_companies.last_time_suspended 
FROM 
  cscart_companies 
  LEFT JOIN cscart_company_descriptions ON cscart_company_descriptions.company_id = cscart_companies.company_id 
  AND cscart_company_descriptions.lang_code = 'tr' 
  LEFT JOIN cscart_absolute_rating AS absolute_rating ON absolute_rating.object_id = cscart_companies.company_id 
  AND absolute_rating.object_type = 'company' 
  LEFT JOIN cscart_vendor_plan_descriptions ON cscart_companies.plan_id = cscart_vendor_plan_descriptions.plan_id 
  AND cscart_vendor_plan_descriptions.lang_code = 'tr' 
  LEFT JOIN cscart_seo_names ON cscart_seo_names.object_id = cscart_companies.company_id 
  AND cscart_seo_names.type = 'm' 
  AND cscart_seo_names.dispatch = '' 
  AND cscart_seo_names.lang_code = 'tr' 
  LEFT JOIN cscart_discussion ON cscart_discussion.object_id = cscart_companies.company_id 
  AND cscart_discussion.object_type = 'M' 
  LEFT JOIN cscart_discussion_posts ON cscart_discussion_posts.thread_id = cscart_discussion.thread_id 
  AND cscart_discussion_posts.status = 'A' 
  LEFT JOIN cscart_discussion_rating ON cscart_discussion.thread_id = cscart_discussion_rating.thread_id 
  AND cscart_discussion_rating.post_id = cscart_discussion_posts.post_id 
WHERE 
  1 
  AND cscart_companies.status = 'A' 
  AND cscart_companies.company_id IN (3, 4) 
GROUP BY 
  company_thread_ids 
ORDER BY 
  cscart_companies.company asc 
LIMIT 
  0, 10

Query time 0.00303

Explain
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	absolute_rating	system	PRIMARY				0	const row not found
1	SIMPLE	cscart_companies	range	PRIMARY	PRIMARY	4		2	Using index condition; Using where; Using temporary; Using filesort
1	SIMPLE	cscart_vendor_plan_descriptions	eq_ref	PRIMARY	PRIMARY	10	hobilifedt.cscart_companies.plan_id,const	1	Using where
1	SIMPLE	cscart_company_descriptions	eq_ref	PRIMARY	PRIMARY	10	hobilifedt.cscart_companies.company_id,const	1	Using where
1	SIMPLE	cscart_seo_names	ref	PRIMARY,dispatch	PRIMARY	206	hobilifedt.cscart_companies.company_id,const,const,const	1	Using where
1	SIMPLE	cscart_discussion	eq_ref	object_id	object_id	6	hobilifedt.cscart_companies.company_id,const	1	Using where
1	SIMPLE	cscart_discussion_posts	ref	thread_id,thread_id_2	thread_id	3	hobilifedt.cscart_discussion.thread_id	1	Using where
1	SIMPLE	cscart_discussion_rating	eq_ref	PRIMARY,thread_id	PRIMARY	3	hobilifedt.cscart_discussion_posts.post_id	1	Using where

Result

company_id	lang_code	email	company	timestamp	status	tax_number	company_description	absolute_vendor_rating	plan	seo_name	seo_path	average_rating	company_thread_ids	suspend_date	last_time_suspended
3	tr	magaza@yedekparcapazar.com	Yedek Parça Pazar	1698830273	A	13667164994			Platinum	yedek-parca-pazar			3_0	1741660494	1741660494