UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'pAvuvy52tS8ADeQZz03JHF1kN+CzFHHCUdEyLjeIIKE=' 
WHERE 
  key_id = '851b4f2293a7dc45d0dd2d443869de6395b2597513b8308fdd99569137d731af' 
  AND (
    token = 'pAvuvy52tS8ADeQZz03JHF1kN+CzFHHCUdEyLjeIIKE=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )