UPDATE 
  vi_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'RqZS95XLaPo1Vdgriw4CGOiRHGTdSLOfj6Iz1H1f+BU=' 
WHERE 
  key_id = '49f723bde9a51aa81579210127768a15cd7ab0209f53336064421b806df34da2' 
  AND (
    token = 'RqZS95XLaPo1Vdgriw4CGOiRHGTdSLOfj6Iz1H1f+BU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )