Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '78208f7cc1bf13c6a6a891698de62098e33decb89c3efa7978d573a86c9df902' 
  AND token = 'm34L1Ii+Ukj+74lF7IKkt4t/DpbP2b/n8MtcnHa+0yc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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