Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '352d3191c3daaed618e82fd73e1db6c466a672de6f620bd7f8a3028a500a9b3f' 
  AND token = 'orarA3GYjElxXwtBf7FzaSLHgq2Y5SbWSej9ld3MB8A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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