Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '076f49f16e334735e0465b866329254f4ddb4195058b2363e0c7231e47b04060' 
  AND token = 'NKXHcdep/VLNuPDo3zZqNgso2Ht+1fq0tk3zyUM/RxM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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