SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2bee05ad8b2b779bc1eadb6bedb4951f1b48383419ffd34588978692bf35161b' 
  AND token = 'ZOWGlXLRlSAs5yOh6FYlrL41LSao2zAuwmQ/PZPqrzI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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