Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '59e23d8ac7c15e279cb385b07c607bdefa10d3242aac75ef62f20462a7d2befe' 
  AND token = '3TGU8hk1xmChePFCFNNFFgvH2kOzKgjaKywzTtMr0yc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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