SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'b438115d32e87d7d623fa476c705c045be14a4138f0e8bb7dfa85698a72f06ce' 
  AND token = 'uVR4jSE+Vy42KoplqD/c9vBaG/uPxpbW0fraaAQ5GhE=' 
  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"
    }
  }
}