Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '56565a4a5b9f2e4a42622916e9f18c3eb8ebd8a2f6da7e76a13d64020cec151b' 
  AND token = 'vTb0wVAnn9ajiexMB70El63CC0fBJyONOLryVcmvKpk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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