UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'UEEleh7zsFwSKz7P6O+Nuu3Acw30MS9xHng4usnjYNQ=' 
WHERE 
  key_id = 'b8de5bf90905c9c634a89e41660c8b8f78330f61b7734693b10f4104427e1717' 
  AND (
    token = 'UEEleh7zsFwSKz7P6O+Nuu3Acw30MS9xHng4usnjYNQ=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )