Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '020e8f32059401cd25a7fe703032685f1df1395faaf5bbec21fddec18c8c7e81' 
  AND token = 'Lx84l/WKzGqW2stT4GNRH0Q0XX3pZnDUzl8QJuiEUY4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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