Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '54190fbdbda31c0889b8cacca5b4045988712dcd8e8b2edd9c210c1e0203fe97' 
  AND token = 'iot1bK1r5a6WjlgW6X4paHRB3sC8+11hj3faZeLAk9U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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