Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05ad41532eabc8f6d4dacb933a1f3b4ed88c99bc656fb9de5696a2f20b7f8399' 
  AND token = 'Irr10QOeJ4tMZHp22QmfdGNTanHLDBxguMBVgT8+qjM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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