Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8144c3c12850e0c42787e6ff96b3b9c965e2cd5546b9a7e4e4ee8ca7ca2d4bbb' 
  AND token = 'Byyb960AeSdfHdQZWvf4/JNJLk4ID9U5zMX1nZ+LP8E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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