SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f07dfd3c734f14ee96fbb6691c92cfa9859853417fc73f5f0d2de24a6b9ad7a' 
  AND token = 'J97+/UheSO/1CZ1BRLSpqXNvnu+qAccJyi1GuMLpKW8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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