Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '45f43889dc4fb5fe2780e9274f141310795eee0c2fe7c8c1415ec200a8ed6681' 
  AND token = '40MIwStII4VVV1H01w/Rdd/OQDTjmu4j1qr+esmDdrk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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