Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2e048cc214b48e484d94144fc486f46490b5e5f8f20ec74273521c8a789115e1' 
  AND token = 'v9zbSB1T1Nyw75vTXiIcxt06TU8bazbDdO6K3asCuwY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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