Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3954e26a2c5e3869c97560d7756309c784fc19959621a201b996ab28d9cb515c' 
  AND token = 'Tj/GfHV5/e4Q/RbyU6EhzD1JZQo1nDQvcFuHoS6Bid4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}