Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02b95e8fac176ea62e283067d1aace5bbe019dc7b97b731755263b94f3ebbe13' 
  AND token = 'k6+PKFu0z3eYhDZlEgkHljhPkhWU+liQIqZHjk4G75I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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