Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9fe411f7be796fd49f5d8c92eec8d6197a9c1a0486e070bbd226d56a11fde4b6' 
  AND token = 'c95Xc3F5QcYnNjxENI4+iQvpPhs/Ax6Miruva4Vl+wE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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