UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'eB8xeVr1eavD4scyic6hOJz0Z71GA//PMqXnW/7iCMg=' 
WHERE 
  key_id = 'e52d928120ba91dadc0297370f07c07f79dd743e7b1a538a94ad4c6100db3227' 
  AND (
    token = 'eB8xeVr1eavD4scyic6hOJz0Z71GA//PMqXnW/7iCMg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )