“Anora” is part comedy, part drama and all heart. The runtime of nearly two-and-a-half hours flies by thanks to writer-director Sean Baker’s emotionally riveting and hilarious narrative. It follows Anora (Mikey Madison), a young Brooklyn sex worker of Russian descent whose Cinderella fairytale might actually be a nightmare. At work, Anora — who goes by Ani — is self-assured, leading men to the ATM to withdraw cash, or slowly inching closer to them the longer they talk. Vanya (Mark Eidelstein) is no Prince Charming. He’s the 21-year-old son of a Russian oligarch who shows up at a strip club looking for a lap dance, preferably from someone who speaks Russian.