UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'rzazttODWdHzps3L6uFbn5SzwXD2rXkTICRNqT1x2i4=' 
WHERE 
  key_id = '21cb54fbc8973ed6e9b86086f2cf227be61624f1e68c2897a7fa806224348292' 
  AND (
    token = 'rzazttODWdHzps3L6uFbn5SzwXD2rXkTICRNqT1x2i4=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )