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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2771c6853cbbd7e83e17efbc23b64741b1e4ee06669d500ae98265d6809d670c' 
  AND token = '4Y3eMH/AdrdYNGWr6mvwV9m8gworM0Jo8pnJGEQA5n8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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