Assuming the box is someplace dark and not leeching any plastics chemicals into the air...
Acacia acuminata over a decade, at least
Acacia confusa probably several years
Mimosa hostilis many years, at least
Peganum harmala over a decade, at least (I've germinated decade old seed)
Verbascum thapsus this one I had to look up...
"82% germination after 5 years open storage (Comes et al., 1978 )" Better than I expected.
Open storage just means a situation basically identical to yours.
You should bookmark the
Kew Seed Database, it often has this type of data on plants.
I store my seeds either in large glass jars or in a large ceramic hoop top cookie jar and store those in the fridge, letting them warm up to room temp before opening. Some I've just kept in a cool dark room for a decade, like my Peganum.