Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd9e04b724def3263c76265b18b78e0ac6cf418689a927aa37f9a125b66e1c296' 
  AND token = 'zQE7FXiomj5MMSCZXsxCekGnU4y2L5SVeB/mxctVyOc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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