Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '292743250f9f5bae6bfe5aaf10d1bdec6c24a8b4801f4ebded92878bfce0ce83' 
  AND token = 'HXOVraqONxEHSCKBrcMfc586Q486tdwbBgHfxdVDnBU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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