UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = '/AD1rjVXPu7ss3qLqTtYbRItLCaGjOh0N0zal6PDmVU=' 
WHERE 
  key_id = '751bc87c3fcf081376e7677e0005685d8e2438ce11c84a1cbf88d4a2fdd0cd8e' 
  AND (
    token = '/AD1rjVXPu7ss3qLqTtYbRItLCaGjOh0N0zal6PDmVU=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )