Iceblossom, my DH is also keto. Look for black soy beans--canned or dry. They are very keto friendly and can be substituted in any recipe but are especially good in recipes calling for pinto or black beans. You will probably have much better luck at finding them in the US. Here, I can only find them at the health food store and at $3 a can, they are not a kitchen staple.
If you do find them at a popular grocery store, please let me know. The DD goes to Michigan occasionally and doesn't mind shopping for me.