Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2981094c1b4c22bd31f29bd2b18e167e46cca5a3bc49cab36c4c0db0c22eacf9' 
  AND token = 'PFCCgC7qlaQtSnl94frZ8DpUun9dwoFyBCv8ANHRS5s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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