Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3cf6979855c3b2f854c7744d3413dbbc189534bec00e7addb3976c2e1f10f8e1' 
  AND token = 'O7E8dBZOX/jBVwOYZhdelf4EPtRyV9XzuzqzOz46s/4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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