Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4eeca36f26da5592a2cfbbc372128c205efcf127ff47e307f022ed9bc16bb916' 
  AND token = '2oBKg7Ik6mZx4XU7loL0Em4cLyiR8/1GRnS/GHb2JgM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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