Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60dabd1b177cd3b4dbec42f805b6ed6e7a8eb091d4067e758d633cae054981c8' 
  AND token = '+kQ/RomNGlgndSyt9IpIZmcXKRb2hY7F1YftTMBGBh0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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