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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9ff229995e8e1b9532e1883e18c0d069433146bc7ad1ca1ff8060d0ab817b985' 
  AND token = 'OT/z+6akYl3fCmj/rjjIH2ma6H8NwnP6u/SoGKT/kIw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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