Unlocking the keyring takes a password – usually the login password is what gets set up. If they differ, or you login without a password (fingerprint reader, no password(?),…) you get prompted for the keyring password. Decided the fingerprint reader on my old Lenovo wasn’t worth the trouble.
To dovetail on what @ubfan1 wrote, if neither of those are the case, then simply changing the keyring password to something else and then back to your login password usually does the trick. You’d want to use seahorse to do that.
When I set it up, I tried NOT using a password, but it wouldn’t let me continue with out one, so I DID set one up and told it boot automatically without asking for the password.
I did NOT know that that was called seahorse, but that was where I changed it. I will try changing it to something else and then back again.
If you log in automatically, the keyring is not being unlocked. To avoid being prompted for a password, you can set the keyring password to blank. Obviously, such setup is less secure, but it is your freedom to decide whether this setup is acceptable in your use case.