Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '28507d32d3b06cb077a7dc7ae3ad241917bbb6545d460ea271f7e02efdcf956e' 
  AND token = 'w4ZTOi6/52vlHmX2QxxeCVMVKTtp9lmn7ESX9Ij253o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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