UPDATE 
  q_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'JKcTenVc1uoyxQsxd+eoQgJr7iJtC+aIA6sFTgc+k+w=' 
WHERE 
  key_id = '4257cb8d0688b1aaa2d77b9f4651dd358b74f306d18d707d87cdabb2d2d4e518' 
  AND (
    token = 'JKcTenVc1uoyxQsxd+eoQgJr7iJtC+aIA6sFTgc+k+w=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )