Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09a4098c89d444ce349d7feff2f80ffa56bf7647d72a91c1b6627bbd5d3a3627' 
  AND token = 'LE1lqyWUsLHnaiLROvLqMrzKapMq/Wal3vzh53yMzic=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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