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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4cc2c9e7389cf79dfb3b52b5be7a69bb19edc582e33fc1a8a57761f276ec7112' 
  AND token = 'kmk7LoDxvYL6Wfu/9sJLh7YPJyAYQ3ro6kYqkCX/W0g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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