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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5032767636dfe36131818424ba893c69210e8bc924057cc29261f60abc42e6b9' 
  AND token = 'I7YEcFdB3T6p96cFY8zbAa5GKnlkwUtsIvj9gq6GN0U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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