Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fa1435eb0d6b45747699f9ad2ca86d723af5481c797d76b3484bce5b06119896' 
  AND token = 'JlQ7nvsR/l8R2iQZczNZNyP2BKOeu8LihBz34UaEoIc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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