Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'abcd06285e5d45626dc7bc1c8fd6f0e4331b3c510a904a4bca78ec3134068df9' 
  AND token = 'hf/6rrTB9hGV74dXl3Ts3/6YVEPVrvEFf54FQPlcJyY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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