Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8fed41fdd9a7e6898d02d43c4e2c28fb46cfc63e0084a361d59fe629380432c9' 
  AND token = '2r/svuA5IUatWQW38HlX/dgW5TH6WEzmjkJ+6QSpSh0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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