Lock specific rows according actual date and lock always columns A and B

Hello!

I have a sheet where columns A and B have only contain dates and then in T1 I have the actual date with formula =NOW()

With the attached code, it locks all the cells if the date contained in cell B is older than the actual date. The code works good, but I would like to add another condition... In addition to what is doing the macro.. I would like to also lock always columns A and B under the same password shown below "123" no matter what is the actual date.

Can somebody help me with this please?

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Just an extra info:

For me it would also work to have all the columns A and B locked together and also lock all the rows that have the dates shown in column B older than the actual date shown in cell T1