Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '4b33445a0d262989041956db584ce116daae5d43fd57b3348f7efe455b0eeb46' 
  AND token = 'EosGxDTJUXtmORXqECLmgyog912iDoJaJgZjELr+1LQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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