Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11e7ad1979079614cd500c9783bbe7b63992df4aa5a41264515ccda585a0eabc' 
  AND token = 'ZgFisfKWctAsf0vcQ9EfS4eErHUJ1BPk4XlMs82oNrc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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