Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4cc076d1e914e7bbe13d3eb613bd001d75c8854f8cc9cc939295dc7169782f39' 
  AND token = 'bkvwVOGiJUTwe7+5LPSyehoD8qu2E+6KybylcofNlzY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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