Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '114efbc2e64239eb1414ea431daca76eded97054e2ff3eab280dd74b7f25a8dc' 
  AND token = 'NzZ40XD2HKKOLOl8hsTI6VVX9CY/Ndifmbzg3k9UX9o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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