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SELECT 
  cscart_pages.*, 
  cscart_page_descriptions.*, 
  cscart_seo_names.name as seo_name, 
  cscart_seo_names.path as seo_path 
FROM 
  cscart_pages 
  INNER JOIN cscart_page_descriptions ON cscart_pages.page_id = cscart_page_descriptions.page_id 
  LEFT JOIN cscart_seo_names ON cscart_seo_names.object_id = cscart_pages.page_id 
  AND cscart_seo_names.type = 'a' 
  AND cscart_seo_names.dispatch = '' 
  AND cscart_seo_names.lang_code = 'tr' 
WHERE 
  cscart_pages.page_id = 7 
  AND cscart_page_descriptions.lang_code = 'tr' 
  AND (
    cscart_pages.usergroup_ids = '' 
    OR FIND_IN_SET(0, cscart_pages.usergroup_ids) 
    OR FIND_IN_SET(1, cscart_pages.usergroup_ids)
  ) 
  AND cscart_pages.page_type IN ('T', 'L', 'B', 'F')

Query time 0.00030

Explain
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	cscart_pages	const	PRIMARY	PRIMARY	3	const	1
1	SIMPLE	cscart_page_descriptions	const	PRIMARY	PRIMARY	9	const,const	1
1	SIMPLE	cscart_seo_names	ref	PRIMARY,dispatch	PRIMARY	206	const,const,const,const	1	Using where

Result

page_id	company_id	parent_id	id_path	status	page_type	position	timestamp	usergroup_ids	localization	new_window	use_avail_period	avail_from_timestamp	avail_till_timestamp	facebook_obj_type	lang_code	page	description	meta_keywords	meta_description	page_title	link	seo_name	seo_path
7	0	0	7	A	B	0	1415336000	0		0	N	0	0		tr	Blog						blog