Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f9fe8733c7195853448a7d4bd616c8119d7d2f383ba20952528adc2b168052e1' 
  AND token = 'uiGxvyHsJes1mlEwiTd/Dv1lmPCsNa0BudcMwEmGyY8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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