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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '672399f889be744d1cfc160704fce3c2ac54f893e05b9d7c17ce29e518eace1e' 
  AND token = '1thCrZR7mi9NsS3YaCeKmtgCN2BVe+k0Kz/r+FGBKgE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

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