be past your sell-by date
US /bi pæst jʊər ˈsɛlˌbaɪ deɪt/
UK /bi pæst jʊər ˈsɛlˌbaɪ deɪt/

1.
sudah lewat masa kejayaan, tidak lagi efektif
to be no longer effective, useful, or desirable, often because of age or changing circumstances
:
•
Some critics say the band is past their sell-by date and should retire.
Beberapa kritikus mengatakan band itu sudah lewat masa kejayaannya dan harus pensiun.
•
She felt she was past her sell-by date in the corporate world.
Dia merasa sudah lewat masa kejayaannya di dunia korporat.