Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c8a2e5890ce4c09a781a587d03dfc266f4002cbd884bef1de4645597a69e33cb' 
  AND token = '3nivhR9FWtiwGnw7vaE/VAT4qCUrsJRJQh/Y3CM298k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00058

JSON explain

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