Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0301526e319bba52443ddef1410d9899f8a3fec2129e3b4995241ed52dce3055' 
  AND token = '2F35jZ4v56VmU2yPEraeIOF0Q//FjqumMThPVF7Z6fs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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