Time-limited, from time limit:

A limit of time within which something must be done.

[Oxford]

English doesn't explicitly distinguish between these, but domain usage does. Temporary is commonly used for password resets that force a new password. Time-restricted may refer to a time of day, such as restricted to business hours. The definition of time-limited naturally encompasses the 48 hour period from the example.

Time-limited, from time limit:

A limit of time within which something must be done.

Oxford

English doesn't explicitly distinguish between these, but domain usage does. Temporary is commonly used for password resets that force a new password. Time-restricted may refer to a time of day, such as restricted to business hours. The definition of time-limited naturally encompasses the 48 hour period from the example.