Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3ae629dc4546bc0ebed00158afe46c341f726663f73bb7b32fce0fec07ccc920' 
  AND token = 'sxxkMqtXYOoXx+FSAI5C0pifwSZehpvkQKrSLgEwEAE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00065

JSON explain

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