Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eb92e12547b53758a1134ee691d8855ec7f85cbf19aa5adc3f5fedb52841ffcd' 
  AND token = '7BKf8LVG6UPHu8aWXL69VdPrKIX2tXMrKt8ddNI64fA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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