SELECT 
  delivery_time 
FROM 
  cscart_shipping_time_descriptions 
WHERE 
  shipping_id = 37 
  AND destination_id = '12' 
  AND lang_code = 'ja'

Query time 0.00023

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}