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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1ed5c8ed21a809457efa52d1c69a8c57b1b1a6a0ae444dceab8bad7e40cca129' 
  AND token = 'SseAq2O5QbI18kgqVb8YETKtgCvlzER7cc8elvsZEUU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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