Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0dd0af43969adbf21a56b82384fd6b94d399da5a23908361646a370748b7b360' 
  AND token = 'Sbxa9YqMO6uM1BqidIxsUORThxW1RpsIYgE27LTiPpk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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