Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '585f01b1fdc83024539fda7a4524c4ad4b472236c510269561d4e6da4e1537b0' 
  AND token = 'VhTW7rWfUFRmE5WZlxUnAKs1CdDSQV5JkmXusc7zkg8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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