Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aabce373b9a2b00d6f5e933b8527e629c109c3776c508340dbeceba01b61b575' 
  AND token = 'iJ/dd0B1uTkpUyHIBMdT0O5rVIbG9iOZq1HhOyLm/bE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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