SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'cf09fc7ed976b6d0857b893129e3f8a9ae454538724d532caa41947f436022e5' 
  AND token = '/Z7Sn9oXzPMNj9MhBdC7gd/PBFV9g+kZQp0NJB76q9s=' 
  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"
    }
  }
}