Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9f16418b9888893ced4649f609ae9eb65a25c83db60c775928221ef421d7312f' 
  AND token = 'rUFS6lP79iwKyHulipoQ7jcPfD5KnOJ2dB5U4ey5lW4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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