I do slightly similar, after a work out your body can absorb carbs much quickly then having carbs when you're not working out. Those carbs don't affect your ketones as it will just be stored quickly into the muscles. Just so you no the carbs won't affect you that much after a work out just gotta make sure it's as low as possible. in fact that's where you want to get in the daily carbs

as for my smoothie I now use
1 cup of coconut milk unsweetened 1g carb 5g fat 1g protein

1 tbl spoon not serving size which is 2 tbl spoon of any kind of nut butter 2-4 g carb 8-10g fat 4-6g protein depending what i get

1tbl spoon chia seed 4g fiber carbs 4g fat 2g protein

1 til spoon mct oil 14g fat

1 scoop of protein (considering half a scoop) 2g carbs 2gs fat 24g of protein

also add Himalayan pink salt for the minerals and electrolytes and half a cup of water just to enjoy the shake longer and make me feel full

9-11g carb 33-35g fat 31-33g protein that's usually my carbs for the day other then nuts that I snack on and avacodos