Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '85d41a9eef62c78df5588a64404aa98e0b0b5c5ef0def124a935d241c9794f06' 
  AND token = 'qBdXswD/qBF11LbV4JJg2f0QJVqA881PR106T/tjXcE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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