Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7f1743e3ae3f72c50c3e1086f197cc3285a9b3469eddf18545feefd9d969f3c3' 
  AND token = 'bsj9iy1OtV60sz9Zl/y9neclbSCZLRaxSdgLpA7WRpA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00064

JSON explain

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