Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '114f2b0e0ce5af8a3b4b72ab2264041774e0d56acb7c0d3b74596f824dddd218' 
  AND token = 'Dl4iluPpna0+Uvui2vxS8eV6her6jcyWPvpmsS5zI7o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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