Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '941ac5000537b69e974d9e0cb3eef98c7e13d43e664c8434a55edfa15f308eaa' 
  AND token = 'lUDNttEyXhnfsAa+14VRC6Y87YCrpbV61u7xym1i6i4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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