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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95dca1c3f4fe927bbb1e682bb080641cfd7ac7cf8fc689fbceba05ac27c9cd0d' 
  AND token = 'NGz9A49Lm552vzjXRwjb931G3u7y5jTFIA9WBdROWaI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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