Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f09f7cae61acafc568e82bb65a9218e34596b7e4ebf2f0b4d2535ba762bdff6b' 
  AND token = 'tM1Q4LpfoiEskFyzvV7wQgj633xavjB8xNUfeRcXl5c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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