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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8431126e74819d61970fa2855bd725bbd85a2e2ab671a575354b038f650fddbc' 
  AND token = 'V+K6yVV4K/cPDhocZ+ay9Vbi++73lx8y7vKDNdnaf1Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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