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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '9ce6962286dd0e79175e9c9600ab7f5a7ee35fa271cec3d5cdf4b30fb946b7fc' 
  AND token = 'GuyLIa3hVi88lf4RWs6UFFaM2IXm9FzrSGKUhJLEV2E=' 
  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"
    }
  }
}