Snapchat does not use "keys" for its features. Official features like Snapchat+ are managed through server-side subscriptions. An APK cannot "unlock" these features because they are verified by Snapchat’s servers every time you log in.
You should this file . Any "crack" or "mod" for Snapchat, especially one claiming to include a "premium key," is highly likely to be a security threat rather than a functional app. Why this is a major risk snapchat-crack-mod-apk-v12-20-0-27-premium-key-2023-download
The version number listed (v12.20) and the "2023" tag indicate this is an old, likely abandoned script used to lure people looking for free "premium" access. Safer Alternatives Snapchat does not use "keys" for its features