UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'S3B9aFdz3OcvECHldbziX8uCxZ8n2TucpT2yZ0erArM=' 
WHERE 
  key_id = 'b6f4df072b5c671a111095a5444980214faccaff8c56e38e9b301e4b0124ba98' 
  AND (
    token = 'S3B9aFdz3OcvECHldbziX8uCxZ8n2TucpT2yZ0erArM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )