Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '98d149bd8ed9229c3be564a849067c36e22935ee06e9e502c72c4d47055ed870' 
  AND token = 'uiBoM1xevezWmESdw8zJ+k5B9gr7hFXM4ogNXXp/iXc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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