Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6f7522048e8631f38c5788535d2239fc66e5f7024ed431e5c397fdc87125409f' 
  AND token = 'cxD9g8mTgVm6WvZoCYZRNQnNVXCa4+8gg19Zyb4bXOo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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