Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '462af657b6bb08a28ab510985d1930afc7aec742b05ff32b76c49abe7cc8301c' 
  AND token = 'HruojbngbeYV+c5/O5epXVCit0DNYaRHnaqNcMk9MS8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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