Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dba956b39dc30851da63d72039a773fb580093e8e785c3b7e76d432b9c37f02c' 
  AND token = 'shx3UKA2xVdla5WD6BgsUC1ZZazenCTKrzanXsgbknU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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