Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '58ee002a8ed0d08ef10c840d031c37c48353feff438be4f7ceb84d016fe87390' 
  AND token = '+vy/y7Et1gKb/GHQLM5H7l43YvYEMngxH4CMXqmDcso=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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