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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1adea9a2438580f67dc0a1163ae1df0fb648b8b6f859f060a43be530c68ecb9e' 
  AND token = '3EsdwX4d0TtsjV98o6eXdTGdu3labit5N1Y1gLAzJ/8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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