Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6654e7dc32d81bed0c1de6b038b70cabc082c5f2458802bcbdd9e146a0bc7134' 
  AND token = '3LzKilRLN0yrZllZtCPOZHimMeTmcDBv0QdgZ9FarSc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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