Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '30a5bf258e046a3620a0870125d92e4b1633f6d510f75769d0c5bbd37130e1ca' 
  AND token = 'kftGEc9K9gfKBmESIREMUvUUCrTai5U+ujsKfxOSaHI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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