Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5bcab03d71594b7327f14189fd4e386d7f194cd10eff9b8e39e1f9d808e817e6' 
  AND token = 'J3rnQ6OA5eLCQVvOyYSlvjsKb86OBZ9CrRcslEksnx4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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