Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed75099b17549bae905d2030a37d9d59f0abe7aa60cd3fdfaab421a9c3ed68b4' 
  AND token = '5AkAijOh2IFDsiX7QwMnn3yDiRH/7tnCgONL+0SKB0o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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