Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e991adbafd404d59753e30aa2d5f13b3f32465d1d42969205d367cbc5e74801e' 
  AND token = 'i9dTz3uR1sS0uM4895pQGTqzdXdr4DqbjNm7G2wRbdg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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