Wrong key for claims

[Jneville0815]

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• [x] I'm gonna mark the checkboxes like this.
• [x] I didn't find in the repository's issues section similar bug.
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• [x] This is not about third-party project, framework, package or technology.

Describe the bug:

claims["expires"] needs to be claims["exp"] in order for the jwt_middleware to properly determine if the token has expired

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