Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '912fd5ffc2d44066e0df478364bb4a885d1f97c6b6f4a3f9d19502be7bd0e0c7' 
  AND token = '0XE1x9jPCEv6B6A2U2J23WegutUCqB7nSk2Q36dgGBQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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