Your landlord cannot change the locks or otherwise lock you out of your rental unit without a court order, even if you have not paid your rent. A landlord is subject to paying you damages of up to 2 months rent, costs, and attorney fees if the landlord is found to have illegally locked out a tenant.
When the State Court moratorium on evictions ends (as of now May 29), if you cannot pay your rent, then you would be subject to an eviction if the Landlord gives you 5 business days notice of non-payment unless you qualify under the Federal moratorium protection, you would have 30 day notice for non-payment, that cannot be sent until at least July 26, 2020.
Federal Moratorium Protection: The Federal Housing Finance Agency (FHFA) announced that Fannie Mae and Freddie Mac have created online multifamily property lookup tools to help renters find out if they are protected from evictions during the COVID-19 pandemic. The tools allow renters to determine if the property they live in is included in the eviction moratorium under the CARES Act.