UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = 'rmReSl5OosgOTDN3c/PBAvD11pdQflk3jrOlgTvRKpk=' 
WHERE 
  key_id = '6db427695486b524ae446b26fd35edcbe26dc4a1d7a25d90c748ee8c9c455d68' 
  AND (
    token = 'rmReSl5OosgOTDN3c/PBAvD11pdQflk3jrOlgTvRKpk=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )