UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'VLlgEdn8KA1GSa4AiEzqaV2ncYJ2yrCNcMoBdFHbi6c=' 
WHERE 
  key_id = 'cc9939947763f49a0598f6e456aad296254755dfc5638feb3f1da07d1a01ad26' 
  AND (
    token = 'VLlgEdn8KA1GSa4AiEzqaV2ncYJ2yrCNcMoBdFHbi6c=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )