SELECT 
  lang_code, 
  value 
FROM 
  cscart_se_settings 
WHERE 
  name = 'parent_private_key' 
  AND company_id = 7

Query time 0.00052

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE cscart_se_settings ref PRIMARY PRIMARY 102 const,const 1 Using index condition

Result

lang_code value
fa 3B5f1Z1I1Y6x0Y6C3I3C