UPDATE 
  vi_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'av25xi5VZRbGo5vjg/RFeKvrQDA6nKCjRaagiFoSSks=' 
WHERE 
  key_id = '81a7259dfb41b4b08564b2864044e5b42cfa7425859dc88863221e343b293e5e' 
  AND (
    token = 'av25xi5VZRbGo5vjg/RFeKvrQDA6nKCjRaagiFoSSks=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )