Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '402ba1f029a9f477103d2de39f8293e85da0234bd558de5a614cfb12532c7dfe' 
  AND token = 'QjaFrxMSg2TD80r2gWRgtN8mIP6DYUQ4QsZHBRkpqF0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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