Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '08139a718e0a20558b267b401a5fa14ebaf94f98aad39ae5124a3aa56fdb8c26' 
  AND token = 'WuA5OYoXYlV7DUS9uKCtGDV2drTPtgOoBA4PmPJL5JQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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