Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'af363934c1484a914a714627c7e85b462c08cfc8ecbfbb337fec0c1526e216d0' 
  AND token = 'VVlUSofNaBCHdExrCzMlBz/bWv5HA0v6eZj1U+5oNb4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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