Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22b37595f15b88f614b672e2fc3dc71c6f5e4e2f10e1f00251c4407f587ce4b3' 
  AND token = 'P2li32b1D1qhP8xVExnB5of70BzXxpUGCZpeWTXwGqI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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