Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'abbe420b87b857a0d04b7d1c4263deea5fa03be605a323c7871b77e54ce1c1fe' 
  AND token = 'AjfLW2stvtNybAi3/9pyaDFbsRRjMZuLremNX1tuFcI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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