Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aad0ee98ddac4c4ff3db982ef5683526e7417306146df499d800559ed9044084' 
  AND token = 'CpbOV4guvYqoEwW9IXG4VOxFu91erEJjjcTGiNE/TNw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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