Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c5d6da8be1d5ced01a4cd5d30e7c9333af6bc6781d2b72b9675d342202afb75a' 
  AND token = '892hgOPU5QPv+7cx0njt+NvtJ5V36MPiEihlXmZMPnU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}