Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b48b566bf10fadf475a81c69e2a814fe665e9813fc8681c366589d79107a524f' 
  AND token = 'ov/xVPZcVqOuCAa2uA1hoPaDPtU3XyyU5fEei+J5UXc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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