Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'ed3136c483e8016f91b090a8a4d34906bf27d74841fb7691b24d5fc2861d8aba' 
  AND token = 'Yc7SZyLNaIiIb9WpL4ZT9MlsBEV0Ky5vwQoAGGaZGZA=' 
  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"
    }
  }
}