Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '62a657556d5c3821b0406247e4da744f81ca446bcd7311185da9a94395732239' 
  AND token = 'JBWwzLEzJafAQ/1WC8cx5K6K4b7SqSRH9W0J8xOpVe8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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