Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c5bad3f64533496a48ad6ee39f1c1381f05b627ee41fb57b53a552111e134250' 
  AND token = 's8DlvvAoAA+gnpcAgAn8j7QGbx+i3GdjqAyoQ6cLzgY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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