Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1dd953e94816bd0906b618dfa9ee96a2e3e0c84d200b3b4291453dabf9232e0b' 
  AND token = '2paNhcmdtUVZEhpx+/qt7sIycfA60I3OyHYVGNkxR8k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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