Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '139eb0a87cca5304dbb78111443b69b997f489b970a94e5c58beb01ed7db7864' 
  AND token = 'hWKAPsfEY/GlngXqG8SLzjVgAziBRKcflu1gjAuPIac=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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