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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '00fe5d9888923fd93e90b41dd8548646d5dcdefdf1eb4f8b89e0a5b956487464' 
  AND token = '5AkII7EdyZwpRs0O+kd10iInWudAXXuWRFBJDZnW17c=' 
  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"
    }
  }
}