Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0782423c81c869c72d2003690bdfbc0294eca467c1afa60e56e34ced9679dd94' 
  AND token = 'uq7dAymvRva2Wt+vBDjnKnuIYzyV1zOImtEksc6G2Kw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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