Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3bdac4742eca6d8bb216bd84b735c1693423e2a6b7c282fe1045d31ac9402707' 
  AND token = 'SbQ4fTN25sp8s+xOyCTfigDX6h5juPO5zv8a6U70x+g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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