Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c012102429ae183e3110fba0b03626aa15f0e2069c6d41cdf6220ddd883481ff' 
  AND token = 'CE9RlnL6eZWI23+PpY3lGTCYW4Stm9YfRCzLrq918yk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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