Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4577d2cc439046f1644d7acb31b419ee5a380ed7ec88f47b7cf12ec5e3cf7987' 
  AND token = '2odRSu3D4b/ai5IBf3nifxKkUCesEY+KMaLexG5ECWs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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