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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba2949e5518d88a8112f11dc90e383332c0bac36f2564dcea512668924228e28' 
  AND token = 'egUUUGJQ1jTobcX3t2IbPUDsv9eYy+2MZhJyFBQ9/u4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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