Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5d6eda4bc07e0589acb02ae425ccd57040d7794ec8e449113dfcd4ea34ee15c0' 
  AND token = 'NXALGiNHjXE9C3XYf26kmBBDqv5HREteYfmjy0CzhRM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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