Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '16401a344bd2ee9cd60a0380d1784d7c1c8e10a8e1b4c64246242f279fe9a0ed' 
  AND token = 'FJSb+FNJAe6tpJEc7dwUTEOve4sH0MUDXz/ooW0nnG8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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