SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'f428f223c08fd87b8bd4d7365a077b2710c5a48763bc8c4a0a1cfb11b3e32168' 
  AND token = 'Fn0MZkgnxEsJfDyPwyVY1TWGtMHxIFDK9wjSK3hL0oQ=' 
  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"
    }
  }
}