UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'e6rfY0vIynTodJXSUkbDlgAZGxlFH1T37qXhAuERs58=' 
WHERE 
  key_id = 'dfec900524397247434824ae57c0191e5192b1f073be9c0552b9eec97f2e5031' 
  AND (
    token = 'e6rfY0vIynTodJXSUkbDlgAZGxlFH1T37qXhAuERs58=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )