Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9db665d9d568614e014fbf1a86ee636f1623cf3a4bfb8b38f628a006561e27cb' 
  AND token = '1ibySEhjmgWSZDpTjs5f6WuKubEB6CPgS4NJTrv3feU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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