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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'e084752789dc0ad989521dbb669c80950398b31d6ae5b5af2065dd24d76e2807' 
  AND token = 'C5o9yWfwBz2Kfko8I6Kp0hrijNJvsZ5uq5Z+jovaA00=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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