Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93c82ce13ed7a83a7cef3c63d47a55edf8bdc4c4cb2fe36bc683eba76682ba74' 
  AND token = 'khz1Px6tF3j2lgE8kps0aK7YBSOhSiBGktvaKlwsjkM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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