Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '744fb315cf3e9fc90a72a44e8999e57c1e2da5342cd10d7992e5acbb568da659' 
  AND token = 'kI4JTbBSEHulQaJUBfa2qpkRqCTxXQ20L3iEwWcmglY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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