Seeds can last over a decade.
https://support.seedsman.com/hc/en-us/articles/360000132069-How-long-can-cannabis-seeds-be-stored-for-

Some Cannabis Seed Companies will state they only last 2 years.
Seeds will last much longer than several years -
If they didn't then places like the Svalbard Global Seed Vault wouldn't exist.
https://www.croptrust.org/our-work/svalbard-global-seed-vault/

Regards
David