Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '95c215ff311d0f20099ba911480d11173ebd6d43f7e12655915ab6f1c98e8ec1' 
  AND token = 'Nm5FIdHuz0r4ffrYHHPB0l/qRjErtyudL9B5tbYIfZQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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