Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '149c3b2fc59268b9df2e41161d431452f2112ea2777f5e7a93cb633e13cb960b' 
  AND token = 'WJOu6XPUuSZtEEyKGDJld+ZCeqnYy3kqvIW43WKVe38=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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