Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e4282513c7038281db87221233221360a35866da5ac4192b40a652aa17cb5515' 
  AND token = 'D0znw+kKVnNH4jYIChh45zVBjIfg2YFLW6w0kPh1+48=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}