Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2cddc29a437618a75766eb4a5bef753e7196c70c2f52a87076861fa95b60a16f' 
  AND token = 'tgh4ziwzYewy7cE8aQ+l7PDx4jtwEQopPkaRDPsdwCQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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