Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '917302411535ad7fc0d619429f40455d92b9c49baf4ab3f14740bae7a910755f' 
  AND token = 'KzvXQvxPHSLpeWweCN7ntBCzTSaxKPzF+CDNlz3pNqo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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