Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '56957c47e1e371f659ed43c3b299e2b316a20bba2d9d23fd11b5e4ee1094bc3e' 
  AND token = 'MnpaXJaVwjEo+zxipf/0Sm+r6bhujt23PH8cPwampzU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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