Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5befccf2bbb1477346a0f54e488d9bd90650eada64ecf9f8ffe5ae0425e9296e' 
  AND token = 'KgaCh/HROmugPFcU2O07pt36D6gCInI+pP8BOSM0gTc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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