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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '9762e61a166ab5ec63c0a2b244354033c687ba58040097aec64c2c058e394438' 
  AND token = 'uR5JRLmlWHwKPSi9q6i9XYehUiHP2Bu/ITAvNg4HdhI=' 
  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"
    }
  }
}