Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9dd2f60d96c2da34062ba28aef81cc2a6ea53e3063eb7abf3b28d40766ead7de' 
  AND token = 'lVynrTFvVV3+k9aMQEgLc7fBHEQBC4XIA9qx4AxWd6I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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