Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9d80fa91c9b125f402d309943996eff8aa5d9f756287188a45e6ed5717689dcb' 
  AND token = 'g4CsotKTM0RwsxfS2vCxwIE4extxVC3Hv/3sAinvxdg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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