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SELECT 
  cscart_languages.lang_code, 
  cscart_languages.name 
FROM 
  cscart_languages 
  INNER JOIN cscart_ult_objects_sharing ON (
    cscart_ult_objects_sharing.share_object_id = cscart_languages.lang_id 
    AND cscart_ult_objects_sharing.share_company_id = 1 
    AND cscart_ult_objects_sharing.share_object_type = 'languages'
  ) 
WHERE 
  1 
  AND cscart_languages.status = 'A'

Query time 0.00041

Explain
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	cscart_languages	ALL	PRIMARY				4	Using where
1	SIMPLE	cscart_ult_objects_sharing	eq_ref	PRIMARY	PRIMARY	159	mahm3t_cs443.cscart_languages.lang_id,const,const	1	Using where; Using index

Result

lang_code	name
en	English
de	Deutsch