Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '48043e73d44e988549d3d2322f32daac20ff25ca3c01df35f6a3843d64789b68' 
  AND token = 'VKDIY1yK3tbdoNT43BuyVQn82yn5Y9DGz6NoVkKzIt0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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