SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '066d227d8ab162c02b26b86a3fd03bbc4391ac84f7c7c6984c92c1ec85845083' 
  AND token = 'dS2DC2RvSTanpPBFGO7gLVztL5vSoI+m93ns5Nv/Vn8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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