Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4a82c0d08ab7d5b3f72abe4c3ae9e707e699f3b1bc0277b704dff24f42364148' 
  AND token = 'HO2aW2B2SoVcr+SixW4ivtNWoH0gGXvx80Ew6jaPJB0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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