Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cb54151c6d7eb426f7ec74ec5654f3810cbe07a49955074bd8344959e04bdd16' 
  AND token = '+UMrz/kg52TapL7nwNYnUUY/3vY0rsJxLDLc08BzxVY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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