Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ab043dde3da95e0162a7cbb28fe0d123ca9973599620cab6c0db768fd11ba14e' 
  AND token = 'gsV+WWD18QI0JMW6EO6yT5elBKLR9pKwapavDdY59m4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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