SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '242234a9157f18a2c1f89a665dd3bca99411799c55eefadc6cca6430ca7eb77b' 
  AND token = 'vSm72o4KGOjH2tAo1gqlvhyhYN+v0n7tn5eWrVbghu8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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