Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '17aecb4be1f2b027f7b8e010da9ec1ded16240e10e5f796e4f2fca824126f2e5' 
  AND token = 'vjy80xQqNxTRHBzK48hpgT65DXAKPlPXMiNIDzW3g7U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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