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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '16522012b4d09323e39811bf01b6e0facf0cc7e8c5d0909fd04f7ebb76ef928e' 
  AND token = 'Gvvc5ul5Opd/gJuJ39whV81mN1A9EKLpfdxTZkURukU=' 
  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"
    }
  }
}