Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f217cfeef1b476a13baae8f4ce8a4792260cf20b866bac3ae7da7416dc7e0369' 
  AND token = 'AvDk7SVQcmSKrHJKuvD9lthOO628gPJYM+BbDrmvet4=' 
  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"
    }
  }
}