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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fa284e0033f39b06b14502c3223c7aea84eff2c694f98b44ba2aef24e0018266' 
  AND token = '9g7OzgtH7TMeAkD8LADK1LqwS1v/3ytN+tW7FJPd52s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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