SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '09315530c6de03126709cac028de8cf52274d53ca62aff981840ff53a1399ec3' 
  AND token = 'v2U7+LXcDZJK8I7ih/ujvqPthdwGuKZX6EdAE/2bwMc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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