UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'AVKbxMPYo7Yr2TJzDMeUiQIaMmy//5JuDeN3kYFVnoY=' 
WHERE 
  key_id = '6ad538d1f41b63c444f7d46557b742eccf40453b11458e7b293f31fb3fc5452d' 
  AND (
    token = 'AVKbxMPYo7Yr2TJzDMeUiQIaMmy//5JuDeN3kYFVnoY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )