Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'edab996ec1403d7ba3b244fbf899c536845611af19bae2a95b369c9df133e4ef' 
  AND token = 'Ejd2cmRy92Jh7RG7ycAKL+h/GCwm9h2CKOTmr5cO3Uc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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