SELECT 
  c.* 
FROM 
  cscart_bm_containers as c 
WHERE 
  1 
  AND c.location_id = 109 
  AND c.company_id = 0

Query time 0.00031

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "c",
      "access_type": "ref",
      "possible_keys": [
        "location_id",
        "location_id_company_id",
        "location_id_position_company_id"
      ],
      "key": "location_id",
      "key_length": "3",
      "used_key_parts": ["location_id"],
      "ref": ["const"],
      "rows": 4,
      "filtered": 100,
      "attached_condition": "c.company_id = 0"
    }
  }
}