SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '445e2d8fe7af6611bbc6f3b0ad9f6ac40059c8ae663c90fd72e23a91988efca3' 
  AND token = 'vR+gzuMWLGeb+xZJFN/sGRSjX3r33HHaBAzsCaVvL+M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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