Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1ecca26d48f488d519ae90b615c466522ebaa23d3f80b35074079a14a2352f18' 
  AND token = 'wLoii8asx6pwMTW1KQS285P18NW6A+40CphuPSW1M5s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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