Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '49443904bc466bce86323d979ec29434825dfe2409ef8ebc9b4b8a989f53c12b' 
  AND token = 'si4zsr08RkMsuKlHFgRIn+Km6e9+5oRbpve+TgG7zfQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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