How to check if key in a gpg file is expired without importing

I want to check if key in a gpg file is expired without importing so I tried this :

$   gpg --list-options show-sig-expire my_key.gpg pub  2048R/8719FCE4 2016-09-28 home:stevenpusser OBS Project <home:stevenpusser@build.opensuse.org> 

but it does not show want I need.

Can you help ?