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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3f1913d3ba906204acc062fd7073b181778cf280dd0418dd77346ada9ecf93a0' 
  AND token = '07ht6Qsua8p/V7GHQGaH/FaNQp290uIudY4Xwr0iaDM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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