SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '643d917dde77f7b809b7f2c36728cb73675feaf59e0a3c89cb6cf70b180872d1' 
  AND token = 'Gg7w3W5I15bsURA4+JfzAcHax3FDnjpPwVEsMqNgmUk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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