Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0f29166c0a7afeb76670b69f3c587299e8e01aeaa927acda7ac7ee1f20102525' 
  AND token = 'LsybgVczBnVYmXYhH0pnpyXbUaH7M7nzfjtnPD4X+WE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}