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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64566c85bc285fcb3505df0ca73c99ccdfec2beda1570d901ba7774c6f2970eb' 
  AND token = 'TmXhBDDy1yC/7msq85MtIpU+J8HHTKNokQ27qRiQslg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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