SELECT 
  c.* 
FROM 
  cscart_bm_containers as c 
WHERE 
  1 
  AND c.location_id = 59

Query time 0.00049

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "c",
      "access_type": "ALL",
      "rows": 208,
      "filtered": 100,
      "attached_condition": "c.location_id = 59"
    }
  }
}

Result

container_id location_id position width user_class linked_to_default status
235 59 CONTENT 16 Y A
234 59 HEADER 16 N A
233 59 TOP_PANEL 16 Y A
236 59 FOOTER 16 Y A