Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2007c6653f64c092707fbbe8937f44f5ed1e25634d73e920f73a650cbc0af3e9' 
  AND token = 'xd8sxuOYPvgG4wcNo4tqoW7DcOclL7IvSvaSmYfnRMg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}