Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '98496c66403a2b2054d741085d0ca0ac544811af5e0978c6af2e8b60abb74814' 
  AND token = 'KLXODygcD35Q2zE/X7MTDQJpFIvpBKqxmUkSoF0cSwI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}