Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3de9d2cd026d22551b127969ab5d43b461e87a8dda37223e241ec5f4868f2e83' 
  AND token = 'lVTn7Q+0GcbRE+bXowZ5G+EgAacHwUObM3P4IHb9zLQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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