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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '7edc92a78309307f0bc834d874c90c98f58c3cafc35054a96a701d615796bcf8' 
  AND token = 'c07sslSJMkXMhngSoGIB9D9bgKEB7+HxxKcAu27LbdE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00008

JSON explain

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