Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '20030f3b81f359e0a6fd7c33c9c7a2a95377a43c50c55a8604caa6c9fbe36f8a' 
  AND token = 'FpGDi9qD6gL4hMGWaBx37Ij9z2Ip0NCACJwen4+sIIM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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