Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cb1e32228a4c1911fbd59537510329dc3943d093c5cccf383a2e448295c5f6fd' 
  AND token = 'KKHDmvdGGwPwkAiba/QKPm3VwifRr8kTsyADHnTnU2U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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