Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6770b89ed0da0d1863eecbf74a9fa1c83f304e32c2f42534812165b196ffb09b' 
  AND token = 'aFyW/1HL7VcKk/+1xAdFyej0lz+XZxAQdfH35yCqVqI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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