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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '372e2ef1286625b6dd35eca54812fd2d323f9a1f5922cd298b2308fedaa24377' 
  AND token = 'f/OpB4uVD5jxuo9wEb81gSzC7OqjyalRA9Z1icyEgXo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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