Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7f2635828924450e82d481cc97cc2041c748bc9099c10b3bcb6e0887cf659505' 
  AND token = 'le0goIe99GUGKSHFrygRyP17WQ9w/cq4qbNe8f+Ee3k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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