UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'kxv9V4PJQydUQkwxQNk3aDl+DW9FyqXEmnCdTgjKxTA=' 
WHERE 
  key_id = '81a40d2490d826e85a74553ae129bf68c271146428a5d8618be77ae29b8c4775' 
  AND (
    token = 'kxv9V4PJQydUQkwxQNk3aDl+DW9FyqXEmnCdTgjKxTA=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )