Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5296482f35f6591eb855a97d5ad619ae0194280036896e136ef23c6314d95dfd' 
  AND token = 'dCjbwDz2JReN+aeubgX03YLegkewzOx5pPR7qO4D8Fo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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