UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '51oauBwl7X+/GuJpMiO7dJfFemDtglWKgdFXJ40I3CY=' 
WHERE 
  key_id = 'ededc2bedbe4094f012da7ae7790a253e95ac76f43cdff43594e4444bad20842' 
  AND (
    token = '51oauBwl7X+/GuJpMiO7dJfFemDtglWKgdFXJ40I3CY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )