Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f10a430469e3fad0611ad50074127295dbf7db6913d87c12859f78f96aef5a1c' 
  AND token = 'hT+pDxMR7actAYbrvin2wUaTfZHU1Yc5KjvmBdMa+98=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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