Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '78885559a269ace62dad0cfd3bebb9fb9f72622850198a8d4fd80adbdae6c91a' 
  AND token = 'Bw8CVdhz8eFA8su8a1qI4JSNab4ajhXOGBNwtubPeYk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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