Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b3613b279419fd697b16cf53d4c5ad6b5c2ff71472c05fa19afa893016fb6dbd' 
  AND token = 'ostk5kk7stEqXH+bgPqUByIM0hf4xdMoow4TgK6m+sU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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