UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'SVITHdA/pRHfbxp88erIY98xJwArLyb6T5t5RYErK+w=' 
WHERE 
  key_id = '0e76507ae14a77a2d5145ae2068343b9ce946540ddab49e61939a1f2c610f11f' 
  AND (
    token = 'SVITHdA/pRHfbxp88erIY98xJwArLyb6T5t5RYErK+w=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )