Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '400794cffcf01ae9dfebcc699b16498025b7b0e63fd9913002331aa7fce49656' 
  AND token = 'SeYXJoAIY+JQVxDzD/31O9k9B/+aNQMGi2Eu983FeYQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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