Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06d3c5e49a7c2d165fa503e64d738bf0f7037086c1734920a473bb6688c6be5b' 
  AND token = 'jZj7abwL6sXGp2x7860hg80uWRJTToyMkhB3xG6RB8E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00139

JSON explain

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