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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'cef33e02a86922ea72de188a2a51997a5b63f0f1477801f4ab31b4376f85ce05' 
  AND token = 'hlMJi5Cd8GOJ4J5wVN7te99A+kmIolwDk0d2gL+nCB4=' 
  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"
    }
  }
}