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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fa2a3144a030962d5d6ae54970fdaa10db99295a4c32a762d96a7722a262b096' 
  AND token = 'GJiwm9PvMj97hfO5QKYbh6QyaOdZa48lU6LH+y8IUT8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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