Mo. Rev. Stat. § 556.037: Time limitations for prosecutions for sexual offenses involving a person under eighteen.

1. Notwithstanding the provisions of section 556.036, prosecutions for unlawful sexual offenses involving a person eighteen years of age or under may be commenced at any time.

2. For purposes of this section, "sexual offenses" include, but are not limited to, all offenses for which registration is required under sections 589.400 to 589.425.