Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a98340079c201045316dbb7654d9bec124e4de87511d9f12d4a0684eb505096c' 
  AND token = 'iGghCPW3wTOfbm7oknjjMxl/IDrf/id27PMQf12XI/U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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