Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32330ea73511adcea543a36b85dc8e690491b7b76558e95e07a67f5320e82f49' 
  AND token = 'o5sqnNDKxlv1LrWpFQAjQeTAO8r8YW71zRMy4mllNYc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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