Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3b2445006de9379e71f2e288d2de7db75593534ba644ca87213696d72fdecf80' 
  AND token = 'dM2fadkTA13zD9+kfLYQx1Iaj49zBmFRdFTDFgxfJiY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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