Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '563a2059b9887a931f834c72daeedc55074f06650d01536ce5ebf0e12e4b4f35' 
  AND token = 'QoLEt8EtqtbWetSuZrcDSSi2ETF9h7QBA1wPO9azri4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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