Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '807ca5be9a879092efdc2fd973cbdf270e45bfefccb60ad55aa0fe80e4c89432' 
  AND token = 'hSyxrzqVhjy/YHuBpMEAjypnWZRY0mu3WNBai6VhPNg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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