Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd4d4f48499076875bfe9c8caddeeb4488d7e828687e4427ffe6a1b7810dbdece' 
  AND token = 'X8gprQi/90sK5esBgNM7A2EGpnqotlXITy8g3viQNvE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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