Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0bfef574f6674c30066227b43556c784a05cb577861237249aad3bda5dcdedb3' 
  AND token = '9/MDeulO8PVFhQfksX6P7yt5aXHOgYhrNz444NpKIY4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00060

JSON explain

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