UPDATE 
  q_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Dz7jnJFu0T7j5YfVyWdxbaZfpToaJ5fVVgvMOhS6r98=' 
WHERE 
  key_id = '838b87871db066bfaf2bf1c9d953841c364d69f94fbc58d5a880170edf0e4c28' 
  AND (
    token = 'Dz7jnJFu0T7j5YfVyWdxbaZfpToaJ5fVVgvMOhS6r98=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )