Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f21702e94348c5c861f73aee88173301154aa7ff0d3162ff8ffbad490908117' 
  AND token = 'Q3PJYp3SCxiQv5BnSI7qIAq6824Lz+18e8yZR92ZW+U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}