Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f9ba005fdfd8b78e8bea5a50cab26263852f0424b9f320870c51ac536fec10ae' 
  AND token = 'K3MgEIU2wwKWHN1IPQYaFVXQEO1ZiUUZleInJs4u924=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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