Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '827741197b6287bb053d250c3f74f3b10db654cf69ca161886971679ca5da766' 
  AND token = 'h7Gp96rZ2HCh0j65wnJm3MG5MI07QTXvRJETS7bkl1k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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