Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4eaed63b8030cdbddb733e50ab21514f7fb897cf23c8cc9c385ae739efc17802' 
  AND token = '1x5nGFDCc87IAuJSWnHFt1gJj2lcqM+sf/aKDoNBQLA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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