Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5dd601a2e83c309da0a17eca76bb7b9e90c242bf6b753199358f0570a224dc81' 
  AND token = 'gBs6zj+EnqoOgihpQkLkt25F2ByUXoAPwph3PE2n2Oo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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