Man pages matching name smime_keys in section 1:

smime_keys.1.de	debian 10 / manpages-de
smime_keys.1.en	debian 10 / mutt
smime_keys.1.de	debian 11 / manpages-de
smime_keys.1.en	debian 11 / mutt
smime_keys.1.de	debian 12 / manpages-de
smime_keys.1.en	debian 12 / mutt