Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '49c6d99d94cecdaf4244e606a2b21e7d64a41a8b006bda8bc97ba4184436fff4' 
  AND token = '1+AZWthU5Y1CqTRH9OAKyw/isHEFO6VaeX2riI7fSfc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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