Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4c152c113aef7665df1433462b4890cc44a36ab6f7ba842994caea8d28f87453' 
  AND token = 'pkfDdt8biRnZRDoMaWdJ1rmhkgUs7g7S0c91IpvYJQw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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