Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'de0ef6f96eaf279cc08144e12563d3677536760e1e0d8d1862c23c1e177b37e9' 
  AND token = 'SXTMjDBROvcuDyOcTlcPFD6ShTKIbH1vFxkijEnpmXU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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