Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '25f2631b028285858f68930dfdae335d509b2864261b90e60f6d74540d4dfc36' 
  AND token = '+L18o2j6H6j+oU95zvlMplbxBCZSlop2T9tNIzLKiBg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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