Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '5c07809e12ff8ea9190f01d6f3c42139a137a6382cea1115b172a62edc68ebb8' 
  AND token = 'wxGDYLJXWSDut77mXlAeu5ffv+zyWEGoyshBHDW3up0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00009

JSON explain

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