Mix 0.5 tsp celery salt and 0.5 tsp kosher salt on a small plate. Rub the rim of a 12-ounce highball glass with the lemon wedge, then dip the rim in the salt mixture to coat evenly, about 30 seconds; reserve the wedge.
Add 1 cup ice cubes to the rimmed glass to fill it, about 10 seconds.
Pour in 2 ounces vodka, 4.5 ounces tomato juice, 0.5 ounces lemon juice, 0.5 tsp Worcestershire sauce, 0.25 tsp hot sauce, 0.5 tsp prepared horseradish, and 0.125 tsp freshly ground black pepper. Stir until well chilled and slightly thickened, 15–20 seconds.
Garnish with a celery stalk, the reserved wedge, and green olives, and serve immediately while cold.