Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '6880e2a26bb5ad990f6eee7ae60c0e363325256144d0e10a3bae097ad2277ddd' 
  AND token = 'rhp+xLfxZ3mL2TlRuZI9xVa3Q07i5OD9xssE5jQssdQ=' 
  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"
    }
  }
}