UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'GR6crDUjy5WPIL+KukjTUCvVLgStgLtRNh+kaHCQ6C0=' 
WHERE 
  key_id = 'b68a51ff61eddf8df4b7d254b96ee3e2c2b4e671f1cd99aeb5568c674ef303f5' 
  AND (
    token = 'GR6crDUjy5WPIL+KukjTUCvVLgStgLtRNh+kaHCQ6C0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )