Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd1acdfeea098a78d2364b7c6865ffbbef93b99dc17363454af8617b7ce5ec5b8' 
  AND token = 'dycip2IbLqaInXhdDpkT7a+T7vvV4+ZS6qac3p5Rjlo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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