Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c759036a8052c7b4347c91fd7fd7194504814572a71a0476160efb2b50dcbc2f' 
  AND token = 'WuIerjgSEdbX45PDBxNQriyjNF10ivoPFC3sQvP5Pwc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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