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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'ad7299e49c3bc0875f948cb809142518f1c9e8863c5b987dc68ada46b25b124b' 
  AND token = 'q6AwK3BAd0WZnl82/Ivbvhwtdeyzi6nYUAyCnEmsNsE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00012

JSON explain

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