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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ddb72a71576fa113ec3f5f84355023b90e6ab1169d10b4fb297e90dc17f363ad' 
  AND token = 'oZIgZn84GmM9Dady2F8Gk6q5+kjusEKoB3dXZKOCrB4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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