When “Locked Down” premiered in January, it provoked eye rolls from critics. Telling the story of a couple whose imminent separation is put on hold by a stay-at-home order, it was among the first movies to be entirely written and filmed during the Covid-19 pandemic.When “Locked Down” premiered in January, it provoked eye rolls from critics. Telling the story of a couple whose imminent separation is put on hold by a stay-at-home order, it was among the first movies to be entirely written and filmed during the Covid-19 pandemic.