Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9c89345ebb7f4d299ae047a8437191210bb6e811919aafe683753c67a83eebd5' 
  AND token = 'fPz0rXZ0jCFeDJvTKSg1izf6n0XBJJ84HenMwHZZT+w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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