Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7d126eee00e5cc47e19817dba2fc1e3a7290275b78d496593d8d049ac2e10021' 
  AND token = 'YdJJUxE8Woi15p/z7LW2xpWQ3rVgbJPXTGjUYoGvAEE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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