Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '965440f9edbd3db7c2cafefa95d6f70670181e8b2da11b6e8f13a2248f213328' 
  AND token = 'OYuZJG/z0uMeAXUXNNrDXKluatO6GrFV28GixfIsqa0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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