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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93b280812421463f4de3850136945cab175b16b3a3c37fa835f467f7d7ad0742' 
  AND token = 'U7L5d2q8kAHsn1VlL4vWUjFbG5RQZ7wDeeBJ1wIQSUA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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