Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f42a955da947f5fc1ed41c81474eecad90403a34d389dbd0122dba1d47805684' 
  AND token = 'sER65ukeIhiOeVRHwAQwDBHLOYm40nzVwcBcPct/bLQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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