SELECT 
  c.* 
FROM 
  cscart_bm_containers as c 
WHERE 
  1 
  AND c.location_id = 39 
  AND c.company_id = 0

Query time 0.00021

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE c ref location_id,location_id_company_id,location_id_position_company_id location_id_company_id 7 const,const 3

Result

container_id location_id position width user_class linked_to_default status company_id
153 39 TOP_PANEL 16 Y A 0
154 39 HEADER 16 Y A 0
155 39 CONTENT 16 Y A 0
156 39 FOOTER 16 Y A 0