Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3567302148072a71be669c2f76a610e4fa5daf1df0a9e749b62d4df8e60d4d33' 
  AND token = 'T5QxkSXoTk/Ah9veC2U61pcQfWb5hoKbRaZ0Vg5pXis=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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