Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'bd0f18793682d490fe12afa169fad9c9c3f8a071d15c816df5bcf153d192edcb' 
  AND token = 'JNBN2tYhFFtQ66za3L668mgs8+ZUAQG2e4GKxNJ6QlE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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