Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9d5bf1305326f1497bcee476385bd0aedbbfb489089349e3f13831ef5125a720' 
  AND token = 'vGvfe4zP6zC/xM7k/qF/X93eTsEGJv5G3cmfj/6fiEc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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