Given this crypttab/fstab:
$ cat /etc/crypttab
nvme0n1p3_crypt UUID=a20b6cb4-c017-43a5-b695-a98fdb230861 /etc/luks/boot_os.keyfile luks,discard
swap_crypt UUID=02fa823d-6779-47ae-b57e-9eb8ba676227 /dev/urandom swap,offset=1024,cipher=aes-xts-plain64,size=512
sda1_crypt UUID=eaaf657d-3526-402e-9580-3d041e888a8d /etc/luks/boot_os.keyfile luks,discard
$ cat /etc/fstab