Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '081ce3562e8e1807f7ba4708aedd92117d32646ec705034affdcf7ed32ff8282' 
  AND token = 'C7IgNDKDq4Ne6s8u7NQL8FAaZz84xjtMVXRDMbemdy0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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