UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'dhPfgWScXq7t8wTu3gp/ThYnbs9B7dwsoDEhYBHaqWc=' 
WHERE 
  key_id = '501bf745fba1e358e5d3ee2b66e0796e1bd4424302093212d3dc0a30d0491558' 
  AND (
    token = 'dhPfgWScXq7t8wTu3gp/ThYnbs9B7dwsoDEhYBHaqWc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )