Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '59634ea2c09492b404ef1d8401e57988a1bf2cc97b9d3a748d98ed8180425256' 
  AND token = 'BOMcCdmwGYtingZ5vC1I07p8lWw1EFAIoqJY9F8BFUg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}