Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f110aa9abe452d7a072db3779da89da17c7be7ad617dcf6d7a5f8a5dc4af128' 
  AND token = 'YyBJW4RUHZCavLCdzhEL85DNS1PrkwKtkXnm3u76lFc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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