Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '5148e705931515ed4d678099e078111428360200c60b4dd869dd4c2236bba08a' 
  AND token = 'a6je+98eLAIa4nv3UKXKAgbeFgTTbHhK1Y8hISu2dZM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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