UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '+ztoAFcv0zieHGMN2ApqFiJfqBHLpuC4DV2gC5qusyU=' 
WHERE 
  key_id = '50852a2b2c2561565c8f2ec21420ff84d841c7639426eb403b4dc7570286748a' 
  AND (
    token = '+ztoAFcv0zieHGMN2ApqFiJfqBHLpuC4DV2gC5qusyU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )