Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1e7af0c490b56843b8e30ab1d560189c958fcc48f80529633292db16b62793ce' 
  AND token = 'GiaD6n8Ac4fV3Al5HR8kEgyXqkX9cZ7H59kMj1UDWW0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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