Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bab640a38dc362f042f7c40d5d437de019ec28c23bdaeed991b994b17d902118' 
  AND token = '2/z0wYoIzJNPonZiOsaQvRf2BqT///NT1tp44cwYJi4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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