Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a03536498d7b9e84fe99c2028b1527a4ec82edb06e9969abd9210668909e023f' 
  AND token = 'R9LlPVB1ddkGAEO/Erz5tNfgwOWy838fzZK++1FJuWU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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