Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '910a97d3661f7164f8446858c69bbfab7a19c1411bf3afeb583801111e820f48' 
  AND token = 'zSiBFmiLck3eggUf/E9qny5L2xQifjydPwpcPcBYfr8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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