Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '239d9f57a281c140f8913908a3e4cc2c11fa00dc22e715195dbbac61cfd79254' 
  AND token = '2Q98ukHqPKlSoLYyK5x+dK6Ymzmx2bvU4uUD3xmGREQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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