UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'TYbTdwzCqqLy52rmzHUcdAtRno0OEyXgt90CRXKengY=' 
WHERE 
  key_id = '53ce46780d2ba846bd793b42ec165648bc677ac264835e071ba28fda92128171' 
  AND (
    token = 'TYbTdwzCqqLy52rmzHUcdAtRno0OEyXgt90CRXKengY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )