Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8d02e632f211acfb55375f616466a3d2fe0e0b25f2da4d7c4180371e67d1a8e6' 
  AND token = '3Y9rrr3yOmAkdM0UaozUYlkB7b4A9b0C1WEhseEx/pw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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