No, your Static QR Codes will not expire.
Once a Static QR Code is created, it will remain active/work indefinitely because this QR Code type directly encodes the data you enter. However, for this reason, it’s not possible to edit the content of Static QR Codes once they are created (if you entered the incorrect web address or the website no longer exists, for example).
If you would like the ability to update content, change the QR Code type, or access scan statistics, we recommend creating Dynamic QR Codes. This QR Code type does not embed data directly into the Code and uses a short URL instead.
Note that it's not possible to convert Static QR Codes into Dynamic QR Codes or vice versa.