SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '92cfeb2cfd415cfc13af993d2a07380c16ca0327a01694e10c13cf3be771478d' 
  AND token = 'nCjtTSNoTwv/08dJ5WXgQ47iCY+XTZndPnz2WsXgUCA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00060

JSON explain

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