Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5eca94a5261370c6d54ded1c253d7fd49976232b3f9ecaaefb9c26c85501d02f' 
  AND token = 'EYKCLw4Cftj50777yn9NpHmD31en4rZTO3C6r++3Oq8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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