Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a9a6c8204c5fa41fd9cd19849161030b8803bac595f1effd2246b8deaf05daad' 
  AND token = 'qtnNPeLDC4tumEa3eeJ5fqH00PfRcHyyTqsPfBr6/zU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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