Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3d38659138043748e837197d6d67f74e20ac2caf3e33cd08e5d821ec5459bafe' 
  AND token = 'mud1as0iGQjFeD84clF9HXE1UBDFzFTL6kO0Vgy/k34=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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