Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f1fde1356092e07e911487b5b2116721628c9492e8254c8ad3765deea409f7ae' 
  AND token = 'NnygTyt/lmzwsb0e3KuKRM9LfWrp7VWRymV6dNK5sQ0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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