Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05b27591fc81964f0ae3e7537a85e0b5707f73973194bd370b0c28d1e5801bca' 
  AND token = 'PeZZF41+gDiUldEclp1mUZrnDSHBswcHu+5MpLgtYgU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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