Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '16e055cac372dc894837172409a7fd7f9a859a6eb37f4acfa42f4b259fc5eca2' 
  AND token = 'kq358CpzXvvsmRsMIqeMekAxVVnFUtn4SOl0zsQVXS8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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