Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7eafb0e5d93110c589faedbe61b6a74663a31859377737974fb58793de9ff1a8' 
  AND token = 'IWCx3COptmUzeBSoYRrMYWl7K8RwAjGAq27cTJLrLP4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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