Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fb8fe9466a9ba76a97c0df1afa4b9ae1c0438db5745425546daa732a6a43eb81' 
  AND token = 'NzA7eF4COoENn+87/7+Qd/FMptfHgDmsDbM5+EDbGcA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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