Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09a915177aaa54cac7cafed07f3e67d3e563a84dde71857764b1c89e7ae0e241' 
  AND token = '00h57EehdE9D8+hauoxMjVcqFnczzrTgd9hUGOvstoE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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