Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5bf4f64bd333a96866ea924abaf1a48fb1d7e95ce58165eade514ee426c2bb8f' 
  AND token = 'qkgb3mdBDLm60FohEszMbSC5xOrZD5qXzWEVxtjj6m4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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