Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '201cbdcdc20b5c5720c85f947e185225ca1bf528268c7644bf78bb7b3475a063' 
  AND token = 'olyg0QK8+lNYzELFawmF/Y7IfmQ/3Rp++d1mTVsMUJE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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