UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'k6DJsu3tNQyj6sErPnHlmYOhI5Js5NCq4BrAx18DdME=' 
WHERE 
  key_id = '818c48360dc0540b2870969911d9a66fd305f05ab56de84ed246ce4df0d928f9' 
  AND (
    token = 'k6DJsu3tNQyj6sErPnHlmYOhI5Js5NCq4BrAx18DdME=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )