Mo. Rev. Stat. § 610.122
1. Notwithstanding other provisions of law to the contrary, any record of arrest recorded pursuant to section 43.503 may be expunged if:
(1) The court determines that the arrest was based on false information and the following conditions exist:
(2) The court determines the person was arrested for, or was subsequently charged with, a misdemeanor offense of chapter 303 or any moving violation as the term moving violation is defined under section 302.010, except for any intoxication-related traffic offense as intoxication-related traffic offense is defined under section 577.023 and:
(L. 1993 H.B. 170 § 1 merged with H.B. 562 § 11, A.L. 1995 H.B. 135, A.L. 2014 H.B. 1665 & 1335, A.L. 2021 S.B. 53 & 60)
(2005) Statutory expungement of criminal records is civil in nature and is constitutional under legislative procedural requirements and provisions of ex post facto, equal protection, due process, and separation of powers. In re Dyer, 163 S.W.3d 915 (Mo.banc).