UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Gf1TAah0O+VDjWXZ3M3YEZl/1P+Z1aZlHgzgA5GLjQs=' 
WHERE 
  key_id = 'de6d794dc10398b61febf9d94a53c41f2d739a952b0f3acf573d3ded5ed6cf48' 
  AND (
    token = 'Gf1TAah0O+VDjWXZ3M3YEZl/1P+Z1aZlHgzgA5GLjQs=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )