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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ccdba18015edd301be152b31e0fcc1a004bdd46b76fc2d77e75b4317def970f5' 
  AND token = '2IxWj0dnHYvi9+QWyEzoKjAE6o/+usSwaaxEAFmeFHM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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