Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bbbc592e64b7c2a15235dfb1707a8ee326e8881b33fb0a179c4e4bae8be3110c' 
  AND token = 'BoXAJDKIsx4nnZb26dHbjOla/MBYpnu3+fZDgveICas=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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