SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'afe2d3896e8274886b4e75f78c3ca6a869244a73ec463c42591ed0596a6b67cc' 
  AND token = 'uWv8zHH+VL8UCQiVeFlB87PxhQoQormsbX+B3jpDwxQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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