Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '916009ca771e844553b88a688f02090194e194e9cb2653e14be0857a4ad5b6ae' 
  AND token = 'vBLEDH9qXG1GGyJPm18gjJoBZjVaFQNUPpp4BrN4F7Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

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